Long-service-life swinging tapered roller bearing based on roller internal circulation

Abstract

The utility model provides a long-life swing tapered roller bearing based on roller internal circulation, which comprises an outer ring, an inner ring and a retainer, a plurality of tapered rollers are arranged between the outer ring and the inner ring, and the tapered rollers are respectively contacted with the inner diameter conical surface of the outer ring and the outer diameter conical surface of the inner ring and roll; the retainer is located between the outer ring and the inner ring, the retainer is provided with window holes, the number of the window holes is equal to that of the tapered rollers, the window holes are used for containing, separating and guiding the tapered rollers, and the window holes are asymmetrical and non-isosceles trapezoids. According to the utility model, the asymmetrical and non-isosceles trapezoid window holes which are equal to the tapered rollers in number and are used for accommodating, separating and guiding the tapered rollers are formed in the retainer, so that the circulating loading of the rolling body is realized, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a long-life swing tapered roller bearing based on roller internal circulation. Background Art

[0002] Tapered roller bearings are a type of rolling bearing designed to withstand combined radial and axial loads. They offer advantages such as high load-bearing capacity, high reliability, and easy maintenance. They are therefore widely used in various mechanical equipment in the automotive, railway, engineering machinery, wind power generation, aerospace, and other fields. Due to their high load-bearing capacity, tapered roller bearings are often used in heavy-load, low-speed swinging conditions. Under such conditions, especially those with small-angle swinging, the rolling elements in the radial load-bearing zone are subjected to the maximum load for an extended period of time, quickly becoming fatigued and shortening the bearing's service life. Improving the service life of tapered roller bearings under heavy-load, low-speed swinging conditions is a technical problem that those skilled in the art need to address. Utility Model Content

[0003] The purpose of the utility model is to provide a long-life swing tapered roller bearing based on roller internal circulation. By opening asymmetric unequal-spherical trapezoidal window holes equal in number to the tapered rollers on the retaining frame for accommodating, separating and guiding the tapered rollers, cyclic loading of the rolling elements is achieved, thereby extending the life of the bearing.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a long-life swing tapered roller bearing based on roller internal circulation, comprising an outer ring, an inner ring, and a cage, wherein a plurality of tapered rollers are disposed between the outer and inner rings, and the tapered rollers respectively contact and roll with the inner diameter tapered surface of the outer ring and the outer diameter tapered surface of the inner ring;

[0005] The retaining frame is located between the outer ring and the inner ring. The retaining frame is provided with window holes, the number of which is equal to the number of the tapered rollers, for accommodating, separating and guiding the tapered rollers. The window holes are asymmetric unequal-sceles trapezoids.

[0006] Preferably, the outer diameter of the retainer is provided with a locking platform to ensure that the tapered roller does not fall out of the outer diameter after being installed from the inner diameter of the retainer.

[0007] The beneficial effects of the utility model are:

[0008] 1. The retainer of this solution is provided with asymmetric, unequal-slope trapezoidal windows, equal in number to the number of tapered rollers, for accommodating, separating, and guiding the tapered rollers. Because the sides of the trapezoidal windows are unequal, the guiding effect on the tapered rollers differs during forward and reverse rotation. Consequently, the tapered rollers move differently during forward and reverse rotation, resulting in controlled, progressive cycling of the tapered rollers during their reciprocating oscillation. Over multiple cycles of cyclic oscillation, cyclic loading of the rolling elements is achieved, thereby extending the life of the bearing.

[0009] 2. The outer diameter of the cage of this solution is equipped with a lock to ensure that the tapered roller does not fall out of the outer diameter after being installed from the inner diameter of the cage, further ensuring that the cage-tapered roller-inner ring assembly formed after the tapered roller and inner ring are assembled is inseparable and will not fall apart during the installation of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0012] Figure 2 It is a schematic diagram of the longitudinal section structure of the present utility model.

[0013] Figure 3 It is a schematic diagram of the overall cross section of the utility model excluding the outer ring.

[0014] Figure 4 For the utility model Figure 3 A magnified diagram of the details of part A in the middle.

[0015] Figure 5 It is a cross-sectional schematic diagram of the entire utility model excluding the outer ring.

[0016] Figure 6 For the utility model Figure 5 A magnified diagram of the details of part B in the middle.

[0017] Figure 7 It is a schematic diagram of the overall structure of the retainer of the utility model.

[0018] In the figure, 1, outer ring, 2, inner ring, 3, tapered roller, 4, cage, 401, window hole, 402, locking platform. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in this specification so as to facilitate understanding and reading by those familiar with this technology. They are not intended to limit the conditions under which the present invention can be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes shall still fall within the scope of the technical contents disclosed in this utility model without affecting the efficacy and objectives that can be achieved by the present utility model.

[0021] At the same time, it should be noted that: unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with ordinary skills in the technical field to which the utility model belongs. The meaning of "multiple" used in the patent application specification and claims of this utility model is two or more; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front end", "rear end", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model. Changes or adjustments to their relative relationships, without substantial changes in the technical content, should also be regarded as the scope of implementation of the utility model.

[0022] The present invention will be described in further detail below in conjunction with the embodiments and with reference to the accompanying drawings.

[0023] Example 1:

[0024] The utility model discloses a long-life swing tapered roller bearing based on roller internal circulation. Figure 1-7 As shown, the embodiment includes an outer ring 1, an inner ring 2, and a cage 4. The outer ring 1 mates with the main engine housing, and the inner ring 2 mates with the rotor shaft. Multiple tapered rollers 3 are positioned between the outer ring 1 and the inner ring 2. These tapered rollers 3 contact and roll with the inner diameter tapered surface of the outer ring 1 and the outer diameter tapered surface of the inner ring, respectively.

[0025] The retainer 4 is located between the outer ring 1 and the inner ring 2. It is provided with a number of apertures 401, equal to the number of tapered rollers 3, for accommodating, separating, and guiding the tapered rollers 3. These apertures 401 are asymmetrical, unequal trapezoidal shapes, with one base angle slightly larger than the other. Because the two sides of the trapezoidal apertures 401 are unequal, the guiding effect on the tapered rollers 3 differs during forward and reverse rotation, causing the tapered rollers 3 to slightly deflect during reverse rotation. Consequently, the tapered rollers 3 move differently during forward and reverse rotation. This allows for cyclic loading of the rolling elements through multiple cycles of oscillation, thereby extending the bearing's life.

[0026] The outer diameter of the retainer 4 is provided with a locking platform 402 to ensure that the tapered roller 3 does not fall out from the outer diameter after being installed from the inner diameter of the retainer 4, further ensuring that the retainer 4-tapered roller 3-inner ring 2 assembly formed after the tapered roller 3 and the inner ring 2 are assembled is inseparable, which is convenient for installation.

[0027] It should be noted that the parts not described in detail in the above embodiments are all prior art.

[0028] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present invention can make slight changes or modifications to equivalent embodiments using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should be included in the scope of protection of the present invention.

Claims

1. A long-life swing tapered roller bearing based on roller internal circulation, characterized by: It comprises an outer ring (1), an inner ring (2) and a retaining frame (4), wherein a plurality of tapered rollers (3) are provided between the outer ring (1) and the inner ring (2), and the tapered rollers (3) respectively contact and roll with the inner diameter tapered surface of the outer ring (1) and the outer diameter tapered surface of the inner ring; The retaining frame (4) is located between the outer ring (1) and the inner ring (2), and is provided with window holes (401) equal in number to the number of the tapered rollers (3) for accommodating, separating and guiding the tapered rollers (3). The window holes (401) are asymmetric unequal-sceles trapezoids.

2. A long-life swing tapered roller bearing based on roller internal circulation according to claim 1, characterized in that: The outer diameter of the retainer (4) is provided with a locking platform (402) to ensure that the tapered roller (3) does not fall out of the outer diameter after being installed from the inner diameter of the retainer (4).

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